IEC 60287-3-1:2017
Collections
International IEC standards
Publication date
June 2017
Number of pages
49 p.
Reference
IEC 60287-3-1:2017
IEC 60287-3-1:2017
June 2017
International standard
Current
Electric cables - Calculation of the current rating - Part 3-1: Operating conditions - Site reference conditions
IEC 60287-3-1:2017 is applicable to the conditions of steady-state operation of cables at all voltages, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. The term "steady state" is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature, the surrounding ambient conditions being assumed constant. This document defines site reference conditions, however the general values are superseded by specific national requirements. This edition includes the following significant technical changes with respect to the previous edition:- the updated list of national laying conditions is now covered in Annex A;- Clause 5 about the information required from the purchaser for the selection of the appropriate type of cable has been removed.
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Sumary
Electric cables - Calculation of the current rating - Part 3-1: Operating conditions - Site reference conditions
IEC 60287-3-1:2017 is applicable to the conditions of steady-state operation of cables at all voltages, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. The term "steady state" is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature, the surrounding ambient conditions being assumed constant. This document defines site reference conditions, however the general values are superseded by specific national requirements. This edition includes the following significant technical changes with respect to the previous edition:
- the updated list of national laying conditions is now covered in Annex A;
- Clause 5 about the information required from the purchaser for the selection of the appropriate type of cable has been removed.
IEC 60287-3-1:2017 is applicable to the conditions of steady-state operation of cables at all voltages, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. The term "steady state" is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature, the surrounding ambient conditions being assumed constant. This document defines site reference conditions, however the general values are superseded by specific national requirements. This edition includes the following significant technical changes with respect to the previous edition:
- the updated list of national laying conditions is now covered in Annex A;
- Clause 5 about the information required from the purchaser for the selection of the appropriate type of cable has been removed.
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Replaced standards
(2)
IEC 60287-3-1:1995/AMD1:1999
February 1999
International standard
Cancelled
Amendment 1 - Electric cables - Calculation of the current rating - Part 3: Sections on operating conditions - Section 1: Reference operating conditions and selection of cable type
IEC 60287-3-1:1995
August 1995
International standard
Cancelled
Electric cables - Calculation of the current rating - Part 3: Sections on operating conditions - Section 1: Reference operating conditions and selection of cable type
Is applicable to the conditions of steady-state operation of cables at all alternating voltages, and direct voltages up to 5 kV, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. This section concerns reference operatings and selection of cable type.
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